diff --git a/labelImg.py b/labelImg.py
index d9561778..e926866c 100755
--- a/labelImg.py
+++ b/labelImg.py
@@ -920,7 +920,7 @@ class MainWindow(QMainWindow, WindowMixin):
         caption = '%s - Choose File' % __appname__
         filters = 'File (*%s)' % LabelFile.suffix
         openDialogPath = self.currentPath()
-        dlg =  (self, caption, openDialogPath, filters)
+        dlg =  QFileDialog(self, caption, openDialogPath, filters)
         dlg.setDefaultSuffix(LabelFile.suffix[1:])
         dlg.setAcceptMode(QFileDialog.AcceptSave)
         dlg.setConfirmOverwrite(True)